Application of entropy-constrained RVQ to coding image subbands

A recent study on the application of entropy constrained residual vector quantization (EC-RVQ) to subband image coding is discussed. The newly introduced EC-RVQ has produced excellent performance results when applied directly to coding images, and is also more cost efficient than competing vector quantization (VQ) methods which have so far been reported in the literature. Experimental results show that subband coding with EC-RVQ performs very well, and place it among the best techniques presently available in terms of performance. A discussion of the new system is given, and some performance comparisons are presented